From 8d28277c065a974873c6781d44b7bcdcd8fb4e8a Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Thu, 13 Sep 2018 21:31:05 +0900
Subject: [PATCH] ALSA: firewire-tascam: fix memory leak of private data
Git-commit: 8d28277c065a974873c6781d44b7bcdcd8fb4e8a
Patch-mainline: v4.19-rc5
References: bsc#1051510

Although private data of sound card instance is usually allocated in the
tail of the instance, drivers in ALSA firewire stack allocate the private
data before allocating the instance. In this case, the private data
should be released explicitly at .private_free callback of the instance.

This commit fixes memory leak following to the above design.

Fixes: b610386c8afb ('ALSA: firewire-tascam: deleyed registration of sound card')
Cc: <stable@vger.kernel.org> # v4.7+
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/firewire/tascam/tascam.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/firewire/tascam/tascam.c
+++ b/sound/firewire/tascam/tascam.c
@@ -93,6 +93,7 @@ static void tscm_free(struct snd_tscm *t
 	fw_unit_put(tscm->unit);
 
 	mutex_destroy(&tscm->mutex);
+	kfree(tscm);
 }
 
 static void tscm_card_free(struct snd_card *card)